css - CSS中的Base64？怎么看代码

Question

在我购买的脚本的 CSS 文件中，我看到三行让我有些担心:

.h5video .control-panel { height: 45px; width:100%; line-height: 45px; bottom: 0px; left: 0px; background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAtCAYAAABvewHEAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAEdJREFUeNpiYGBg2Mzg6+v7iunu3bt/mIBcBqb///8jE//+/cPOJZaFkwDbxggEIOI/iGCAE4wQFhAw4GIxYZWFcSEGAAQYAB5zRmw2StEiAAAAAElFTkSuQmCC") repeat-x scroll 0 0 transparent; position: absolute;  }


.h5video .control-panel .seek-bar-guage { height: 7px; background: url("data:image/png;charset=utf-8;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAICAAAAAAdccqdAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAABdJREFUCB1j+M/0g+kr02emj0D4mekrAD41B7hJ9Jz5AAAAAElFTkSuQmCC") repeat-x scroll 0 0 transparent/* #C9DD1A */; width: 0%; left: 0px; z-index: 2; position: absolute; z-index: 0; }
.h5video .control-panel .seek-bar-buffer { height: 7px; width: 0px; top:0px; left: 0px; position: absolute; z-index: 0; background: url(data:image/png;charset=utf-8;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAICAIAAAC3eAIWAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAACFJREFUeNpiyMrKYvrz5w/Tr1+/wPjnz59w/Pv3b4AAAwBFtxXP00sbFwAAAABJRU5ErkJggg==); }

这些都在编码中显示了 Base64，我正试图弄清楚它实际上应该在那里显示什么。有人可以帮忙吗？

Answer 1

您看到的是 base64 编码的图像。您可以解码它们并将它们写入扩展名为 .png 的文件以查看其内容。 CSS 中 base64 编码图像的优势在于它们可以减少浏览器为加载页面而必须向网络服务器发出的请求数量。